<template>
  
  <div>
    <!-- 幻灯片 开始 -->
    <div v-swiper:mySwiper="swiperOption">
        <div class="swiper-wrapper">
            <div 
              v-for="(banner, index) in bannerList" 
              :key="index"
              class="swiper-slide" 
              style="background: #040B1B;">
                <a 
                  v-if="banner.linkUrl&&banner.linkUrl!=''" 
                  target="_blank" 
                  :href="banner.linkUrl">
                    <img :src="banner.imageUrl" :alt="banner.title">
                </a>
                <a v-else >
                    <img :src="banner.imageUrl" :alt="banner.title">
                </a>
            </div>
        </div>
        <div class="swiper-pagination swiper-pagination-white"></div>
        <div class="swiper-button-prev swiper-button-white" slot="button-prev"></div>
        <div class="swiper-button-next swiper-button-white" slot="button-next"></div>
    </div>
    <!-- 幻灯片 结束 -->
    
     <div id="aCoursesList">
      <!-- 网校课程 开始 -->
      <div>
        <section class="container">
          <header class="comm-title">
            <h2 class="tac">
              <span class="c-333">热门课程</span>
            </h2>
          </header>
          <div>
            <article class="comm-course-list">
              <ul class="of" id="bna">
                <li v-for="course in courseList" :key="course.id">
                  <div class="cc-l-wrap">
                    <section class="course-img">
                      <img
                        :src="course.cover"
                        class="img-responsive"
                        :alt="course.title"
                      >
                      <div class="cc-mask">
                        <a href="#" title="开始学习" class="comm-btn c-btn-1">开始学习</a>
                      </div>
                    </section>
                    <h3 class="hLh30 txtOf mt10">
                      <a href="#" :title="course.title" class="course-title fsize18 c-333">{{course.title}}</a>
                    </h3>
                    <section class="mt10 hLh20 of">
                      <span 
                        v-if="Number(course.price) === 0"
                        class="fr jgTag bg-green">
                        <i class="c-fff fsize12 f-fA">免费</i>
                      </span>
                      <span 
                        v-else
                        class="fr jgTag bg-red">
                        <i class="c-fff fsize12 f-fA">¥ {{Number(course.price).toFixed(2)}}</i>
                      </span>
                      <span class="fl jgAttr c-ccc f-fA">
                        <i class="c-999 f-fA">9634人学习</i>
                        |
                        <i class="c-999 f-fA">9634评论</i>
                      </span>
                    </section>
                  </div>
                </li>
              </ul>
              <div class="clear"></div>
            </article>
            <section class="tac pt20">
              <a href="#" title="全部课程" class="comm-btn c-btn-2">全部课程</a>
            </section>
          </div>
        </section>
      </div>
      <!-- /网校课程 结束 -->
      <!-- 网校名师 开始 -->
      <div>
        <section class="container">
          <header class="comm-title">
            <h2 class="tac">
              <span class="c-333">名师大咖</span>
            </h2>
          </header>
          <div>
            <article class="i-teacher-list">
              <ul class="of">
                <li v-for="teacher in teacherList" :key="teacher.id">
                  <section class="i-teach-wrap">
                    <div class="i-teach-pic">
                      <a href="/teacher/1" :title="teacher.name">
                        <img :alt="teacher.name" :src="teacher.avatar">
                      </a>
                    </div>
                    <div class="mt10 hLh30 txtOf tac">
                      <a href="/teacher/1" :title="teacher.name" class="fsize18 c-666">{{teacher.name}}</a>
                    </div>
                    <div class="hLh30 txtOf tac">
                      <span class="fsize14 c-999">{{teacher.career}}</span>
                    </div>
                    <div class="mt15 i-q-txt">
                      <p class="c-999 f-fA">{{teacher.intro}}</p>
                    </div>
                  </section>
                </li>
              </ul>
              <div class="clear"></div>
            </article>
            <section class="tac pt20">
              <a href="#" title="全部讲师" class="comm-btn c-btn-2">全部讲师</a>
            </section>
          </div>
        </section>
      </div>
      <!-- /网校名师 结束 -->
    </div>
  </div>
</template>

<script>
import bannerApi from '@/api/banner'     // 导入轮播图API接口
import indexApi from '@/api/index'       // 导入首页API接口
export default {
  data () {                              // 定义页面中显示的模型数据
    return {
      bannerList:[],                     // 轮播图数据列表
      courseList:[],                     // 热门课程数据列表
      teacherList:[],                    // 名师数据列表
      swiperOption: {                    // 轮播图插件配置
        pagination: {                    // --配置分页
          el: '.swiper-pagination'       // ----分页的dom节点
        },
        navigation: {                    // --配置导航
          nextEl: '.swiper-button-next', // ----下一页dom节点
          prevEl: '.swiper-button-prev'  // ----前一页dom节点
        }
      }
    }
  },
  created() {                            // 在页面渲染之前执行"
    // 调用抓取数据的方法
    this.fetchData()        
  },
  methods: {                             // 定义多个方法
    
    /**
     * 抓取数据的方法
     */
    fetchData() {
      // 获取轮播图
      this.getBanner()
      // 获取热门课程和名师
      this.getCourseAndTeacher()
    },

    /**
     * 获取首页轮播图
     */
    getBanner() {
      bannerApi.all().then(response => {
        this.bannerList = response.data.list
      })
    },

    /**
     * 获取热门课程和名师
     */
    getCourseAndTeacher() {
      indexApi.courseAndTeacher().then(response => {
        this.courseList = response.data.courseList
        this.teacherList = response.data.teacherList
      })
    }
  }
}
</script>